Fan belt



Patented-Feb. l2, i924.

stares Param: essieu.

ROBERT L. GOODBAR, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO. GOODBAR vRUBBER COMPANY, 0F MINNEAPOLIS, MINNESOTA, A CORPORATION OF MINNESOTA.

FAN/BELT.

To-aZZ whom z't may concern.'

Be it known thatI, ROBERT L. GooDBAR, a citizen of the United States, resident of Minneapolis, county of Hennepin, State of Minnesota, have invented certain new and useful Improvements in Fan Belts, of which the following isa specification.

The object of my invention-is to provide a belt designed especially for use in operating the fans of automobile engines, though the belt it adapted also for other purposes.

The object of the invention is to provide a belt composed of woven strips of fabric protected in, such a manner that oil and grease from the engine cannot enter between the edges of the fabric strips and injure or destroy the belt.

The invention consists generally in various constructions and combination, all as hereinafter describedand particularly pointed out in the claim. l

In the accompanying drawings forming part of this specification,

' Figure 1 is a prespective view of a belt embodying my invention,

Figure 2 1s a sectional view on the line 2-2 of Figure 1. t

In the drawing, 2 represents a series of woven fabric strips, cut a suitable width to form` the belt and laid one upon the other. The strips are cut out of the fabric on the bas or obliquely so that there will be a slight stretch or give to the belt, a character istic that has been found to be desirable. particularly in automobile fan belts. These strips are composed of a material that is capable of being vulcanized to form a homogeneous strip.

To protect the edges of the belt from the entrance of oil or grease between the edges of the strips and the resultant damage to the belt by such entrance, I provide a cover therefor consisting of asheet 3 of vulcanizable material, preferably a rubberized fab-A ric cut a suitable width and wrapped around the strips, as shown in Figure 1, with the longitudinal edges lapping by each other,

as shown.

as the ends of the fabric strip 3 lap by one another, the strips of which the belt is composed are fully covered and protected and it will be impossible for oil or grease to enter or in vanyway come in contact Vwith the core of the belt. This outside cover or jacket will also add to the strength of the belt and 'also to a considerable extent venhance its appearence.

As shown in the figure, I may stitch the jacket in place on the belt, running the stitches lengthwise near the lapping edges of the jacket, so that after the jacket 1s.

` ferent lengths and varying widths, according to the character ofthe work.

claim as my invention:

An endless beltcomposed of several rubberized vulcanizable fabric strips, each strip forming a single ply and cut obli'quely to the direction of the threads of the fabric to allow longitudinal stretch thereof, said strips being cut out separately and laid concentrically one upon the other with their corresponding longitudinal edges in substantial alinement and forming an endless core, and a rubberized vulcanizable jacket wrapped around said core and having its longitudinal edges lapping each other lengthwise of the belt and on its exterior periphery, its transverse edges lapping each other transversal of the belt, and a single row of stitches through the overlapped portion of the j acket,v said jacket concealing and protecting the edges of the fabric and said strips and jacket being vulcanized to form a homegeneous elastic endless belt.

In witness whereof, 'I have hereunto set my hand this 29th day of September 1919.

ROBERT L. GooDBAR. 

